LAHID.K - THE GULLS AND TERNS — LAUUS. 



233 



imIs 

 iiij,' 



HIT 

 S (111 



KM', 



iml- 

 i)lY. 



fll- 

 Hiori', 



iiitil 

 as 

 riiis. 

 can 

 aius 



or a 

 not 

 can 

 the 

 lith 

 I'avs 



The eggs of L. oirldentallit do not differ iimch citluT in .shape or sizo from those 

 ol L. (iri/riittifitn. Their most (ionunon ground-color is a pale elay ; but they vary 

 liniii pearly white to grayish gr , , pale ash, or even deej) brownisli clay -color. The 

 markings of the eggs of the former species are more numerous, and of u darker shade 

 than those of the latter. 



LaruB afflnis. 



THE SIBERIAN BERBINO OtTLL. 



Larusaffiiiia, Reinii. Vid. Med. IS.IS, 78 (Orecnliiml) ; Ibis, 1801, 17. — .SEKnon.M & Brown, Ihk, 



187«, 452. — SArNDiais, 1'. Z. S. 1878, 171. 

 Litnin atchiiuiiiiis, Mkvks, i')(v. K. Vetciisk. Ak. Fiirli. 1871, 786 (not of Pallas, 1826). 

 Lariis/Kscun, JvAivus, IJ. Imliii, 11. 1804, 830 (not of Linn. 1758). 

 Lfiriisoccidenfniis, Hi'.Mi;, Stray Keiithois, 1873, 273 (iiotof Auu. 1839). 

 Lurus Jlcuglini, UitKK, H. Kiir. 2<l wl. V. 187(i, 58. 



Hau. Northuni i)art of Piihcarctic Region ; Grueiiliind. 



Si>. Chak. Similar in guiiurid appuanuu'i; to L. uiridinldliit, Imt of (piile iliffiTunt proportions, 

 mill tliL' hill witli the red spot coiitimicd, tliougli more faintly, on to the upper muiidilile. Legs and 

 feet yellow ; eyelids orange-red or vermilion at all seasons. 



Tlieie lieinj,', to our knowledge, no e.xamjde of tiiis sjiecies in American collections, and no more 

 satisfactory ilescri])tioii lieiiig at present accessible to us, we give below a translation of the original 

 description by Dr. Reinliardt : — 



" In file year 1851 the Royal Museum received from Nenortalik, in the district of Julianehaid), 

 a ivmarkabje (jiiU belonj^iiig to the Olaiicus group of Rruch, which jirobably accidentally strayed 

 t(i the Greenland coust j iti.su full-plumaged bird, which has already the spotted head of the winter 

 divss, but has not entirely comideted its sliedding, as the first three ipiills are not yet changed. In 

 its]iliimage it shows considerable resemblance to L(trm myjcntatiis ; but the back and the wings liave 

 a riiuarkably darker grayisli blue color, which is even considerably deeper than in Lams triduc- 

 tijlKn; besicU'S, the head and throat are more densely and darkly spotted than ever appears to be 

 tlie case in the first-nameil species. The ipnll-feathers resemble in the main those of L. argentutns ; 

 till' In.st is brownisli black ' in the greatest part of its length, with the e.xcejjtion of a ([uite little 

 slite-cobiied area on its inner surface nearest to the root, and ends in a white point two inches' long, 

 wiiidi again a little before the eml of the feather is furnished with a small black cross-band. On 

 the lither ([uill-feather the slate-gray spot is somewhat more extended on the inner surface, and the 

 fcatiicr has indeed a white point, but wants a round spot of the same color, which in L. argentatus is 

 fiiuiiil on the inner surface of this feather a little in advance of the tip. The remaining (piill-feathers 

 also have white ])oints ; but the grayish-blue C(dor, which on the other quill-feathers has already 

 bc^uii to show itself also on the outer surface, spreads in these places more ami more, until finally, 

 on the si.xth (luill-feather, the black color is limited to a small cro.ss-band just in I'ront of the white 

 tip. The shoulder-feathers also have white tips. The feet ui)pear to have been of the .same color 

 as in L. argentatui, and the beak is yellow, with a bright red spot in front of the anj;le of the lower 

 jaw, and a lighter tint of the .same color on the upper jaw in front of the nostrils, which is likewise 

 a continuation of the spot on the lower jaw. 



" In size it is considerably smaller than the iidult Larus argentatm, and agrees in this respect 

 closely with the young of the latter species ; but ... it has the beak considerably larger, higher, 

 and at the .same time more powerfully constructed, than is the case in the young argentatm. 



Total length 520 MiH. Height of beak at angle of lower jaw 19 Mill. 



Length of folded wing .... 420 " Tarsus (foot-root) 56 " 



Distance from forehead to tip of beak 48 " Middle toe with claw 56 " 



Distance from corner of mouth to 

 tip of beak 74 " 



1 " The brownish-black color of the first three qnill-feathcrs is to a great extent only a result of fading, 

 and will in the newly-grown feathers be deeper and purer." 



- 2.00 Danish inches = about 2.06 English inches. 

 VOL. II. — ,30 



- Translator. 



